Skip to main content
Search titles, bodies, and author names
Found 11,251 posts across 1 forum.

IIfx Won't boot — #87

Well that didn't work out either. SCSI filter on the 7500's hard disk didn't change anything. Filter and terminator (and no internal drive) also didn't boot. I added an external h…
68kMLA Hardware by protocol7 Tue, 16 Aug 2011 - 15:31

IIfx Won't boot — #86

As to your problem, I'm still inclined to believe SCSI problem, but I would expect you to get to the flashing question mark with no cable plugged in. It's conceivable that it need…
68kMLA Hardware by protocol7 Mon, 15 Aug 2011 - 20:34

IIfx Won't boot — #85

As for the jumpers (partially documented here), J106 is open, J103 is closed. This seems to be the correct setup. Click to expand... That is a great find. Nice to know. I tri…
68kMLA Hardware by trag Tue, 9 Aug 2011 - 22:49

IIfx Won't boot — #84

I read back over the start of this thread again. Just wanted to add some pieces of info. I too have two different brands of RAM. 4x Texas Instruments and 4x Accutek. I've tried ea…
68kMLA Hardware by protocol7 Sat, 6 Aug 2011 - 16:09

IIfx Won't boot — #83

The screen takes a bit of time to kick in, so it's possible that the SuperMac logo appears before the grey screen with the other drives. By the time the screen is visible the logo …
68kMLA Hardware by protocol7 Fri, 5 Aug 2011 - 23:37

IIfx Won't boot — #82

The SuperMac image is resident in the firmware for the video card. That is, it lives on the EEPROM chip on the video card. If you're not getting that screen with some configurati…
68kMLA Hardware by trag Fri, 5 Aug 2011 - 20:31

IIfx Won't boot — #81

I took out the RAM and ROM and cleaned the contacts on them with q-tips and isopropyl alcohol. Still no improvement. The RAM slots are in two banks of four. If I leave two slots em…
68kMLA Hardware by protocol7 Fri, 5 Aug 2011 - 14:58

IIfx Won't boot — #80

I'm still a bit confused by this claim that active terminating drives don't need special termination on the IIfx. The dead IIfx hard disk is the only one that when connected up to …
68kMLA Hardware by protocol7 Fri, 5 Aug 2011 - 11:59

IIfx Won't boot — #79

Last test for tonight. I put my 7500 hard disk in the LC III, wiped it and installed a fresh System 7.5 for all Macs (I tried 7.1 but the resulting install wouldn't boot the LC III…
68kMLA Hardware by protocol7 Fri, 5 Aug 2011 - 01:36

IIfx Won't boot — #78

On the 7500 the hard disk was on the end of the cable with the cdrom as intermediate. You're right. I assumed the term jumper would be at the back. I took off the drive sled and t…
68kMLA Hardware by protocol7 Thu, 4 Aug 2011 - 21:43

IIfx Won't boot — #77

Okay, they don't have any jumpers, but does that mean that they don't have any jumper pins? I've never seen a SCSI drive without jumper pins (or resistor packs) to set the termina…
68kMLA Hardware by trag Thu, 4 Aug 2011 - 21:38

IIfx Won't boot — #76

Ran out of edit time on the last post. Using the 7500's jumper-less hard disk and cdrom I get the grey screen with term power enabled or disabled on the cdrom.
68kMLA Hardware by protocol7 Thu, 4 Aug 2011 - 21:30

IIfx Won't boot — #75

Thanks for the ideas. I'm pretty sure I tried with no scsi cable attached and got the grey screen. I'll try it again soon and see what happens (I have it sitting with batteries ou…
68kMLA Hardware by protocol7 Thu, 4 Aug 2011 - 20:27

IIfx Won't boot — #74

I just tried the hard disk from my Classic II but it still won't go past the grey screen (no rounded edges btw). So that's power ok and known-good HD not booting it. I've tried the…
68kMLA Hardware by trag Thu, 4 Aug 2011 - 20:10

IIfx Won't boot — #73

A friend called over earlier with a multimeter and the PSU checks out. +12v, -12v and +5v in all the right places. The batteries checked out too. I just tried the hard disk from m…
68kMLA Hardware by protocol7 Thu, 4 Aug 2011 - 18:58

IIfx Won't boot — #72

Unfortunately no. I'm not really equipped for this level of troubleshooting. I'm still at the swap-with-a-known-good-part stage. I've stripped it down a bit now. Disconnected ever…
68kMLA Hardware by protocol7 Wed, 3 Aug 2011 - 21:50

IIfx Won't boot — #71

Still no progress. I can't get it to boot beyond these grey screens. I've tried the internal disk from my 7500 and an external SCSI (as apparently you don't need the black terminat…
68kMLA Hardware by trag Wed, 3 Aug 2011 - 21:24

IIfx Won't boot — #70

Still no progress. I can't get it to boot beyond these grey screens. I've tried the internal disk from my 7500 and an external SCSI (as apparently you don't need the black terminat…
68kMLA Hardware by protocol7 Wed, 3 Aug 2011 - 20:01

IIfx Won't boot — #69

Instead of starting a new thread I'll tack onto this one. I'm trying to get my "new" IIfx working here. Initially it didn't power on. I added in two batteries and that got it to b…
68kMLA Hardware by protocol7 Wed, 3 Aug 2011 - 17:26

1920x1080 on PM8500 built-in, Twin Turbo 128 — #31

I can't commit to putting lots of time into this. I can look into an extension or whatever for possible tables, but doing ROM hacking in't something I have time for.
68kMLA Hardware by noidentity Fri, 29 Jul 2011 - 00:32

1920x1080 on PM8500 built-in, Twin Turbo 128 — #30

I'm terrible at pattern finding, BTW, but an ace at finding pattern disruptions . . . picture the sort of guy who can find a four leaf clover just about anywhere without too much f…
68kMLA Hardware by Trash80toHP_Mini Tue, 26 Jul 2011 - 16:23

1920x1080 on PM8500 built-in, Twin Turbo 128 — #29

Hmmm, even if there is no extension with the driver, it still could be possible to patch the driver in memory. So the process might be an extension that finds it in memory, patches…
68kMLA Hardware by noidentity Tue, 26 Jul 2011 - 15:31

1920x1080 on PM8500 built-in, Twin Turbo 128 — #28

The basic drivers are in the DeclROM for Sense Line defined/activated FixedRez Apple Monitor standards. IIRC, the RadiusWare control Panel would be where any "options" were set fo…
68kMLA Hardware by Trash80toHP_Mini Tue, 26 Jul 2011 - 05:38

1920x1080 on PM8500 built-in, Twin Turbo 128 — #27

No, unfortunately I don't have much hardware tools beyond a digital multimeter and anything custom I make on a breadboard. Using a ROM might be too difficult. Regardless, the idea…
68kMLA Hardware by noidentity Tue, 26 Jul 2011 - 01:56

1920x1080 on PM8500 built-in, Twin Turbo 128 — #26

I'm not at home, so I can't upload the driver but . . . . . . KnightTech is 404! BLEH!!!!!!!!!!!!!!!!!!! IIRC, I've got all the RadiusWare downloads backed up on various …
68kMLA Hardware by Trash80toHP_Mini Mon, 25 Jul 2011 - 22:19
mp.ls